And in each toc file I do similar (add "SavedVariables" to "SavedVariablesPerChar" and then delete "SavedVariables" line).

Is this likely to break any thing? It does seem so far (ie literally several minutes of making bars) that each char now has its own independent bars and binds, though as I say I know nothing of add ons or how they work so I am expecting this to all fall to pieces quite soon